Pollination efficiency of Apis mellifera adansonii (Hymenoptera: Apidae) on Callistemon rigidus (Myrtaceae) flowers at Dang (Ngaoundéré, Cameroon)

To evaluate the impact of the honeybee Apis mellifera adansonii Latreille on fruit and seed yields of Callistemon rigidus R. Br. 1819, its foraging and pollinating activities were studied in Ngaoundéré for two seasons (June–August 2009 and July–September 2010). Each year, observations were made on 1...

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